The process was developed at the Beijing municipal sewage treatment plant in Gaobeidian during 7 years of R&D. The survival time of the red bacteria is given at over 15 days, and remove ammonia at rates over 95 %. A large-scale cultivation procedure has been developed, and reactors of 350 to 450 m3 volume are now being developed which can handle 36.000 m3 of effluent.

China Industrial Biotechnology Network, Dec. 10, 2012